Single- and double acting
The Skarpenord hydraulic actuators can be delivered as single- or double acting and can operate ball- and butterfly valves. The design simplifies maintenance and installation, which gives the customer a cost effective product. Quarter turn actuators are delivered with adjustable stroke or fixed 90 degree rotation with mechanical locking.
Hydraulic actuator, single acting
Type: 1/4 turn hydraulic actuator
RE2 – Spring-to-close-action
RF2 – Spring-to-open-action
- Scotch-yoke design, piston type
- Adjustable stroke
- Local visual position indicator
- Stationary hand pump or quick connectors for portable hand pump
- Connection flange according to ISO 5211
Available torque up to 17800 Nm (Larger actuators on request)
Service temperature -20°C to +80 (+110°C upon request)
Hydraulic actuator, double acting
Type: 1/4 turn hydraulic actuator
RA2 – Mechanical locking
RB2 – Adjustable stroke
- Scotch-yoke design, piston type
- Local visual position indicator
- Manual operation by stationary hand pump or by portable hand pump via quick connectors
- Connection flange according to ISO 5211
Max hydraulic working pressure 220 bar
Actuator torque range 69 – 64550 Nm
Service temperature -45°C to +120°C
Use area: For dry and submerged purpose (for submerged type “SBM” a seal connection kit is added).
Mechanical locking
All RA actuators are delivered with Mechanical Locking as standard. The mechanism is integrated in the actuator and totally independent of hydraulic oil. If there is loss of hydraulic pressure or even a fire, the valve will be kept safe in last position (open/close).
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Hydraulic actuators of “scotch yoke” design with mechanical locking of the actuator in both end positions.
Skarpenord’s hydraulic actuators based on the “scotch-yoke” principle. The “scotch yoke” design allows a sturdy construction that ensures maximum performance under all conditions. Compared to other actuator designs, the risk of malfunction due to contaminated oil is greatly reduced allowing improved reliability at less maintenance. The design also allows the actuator’s plunger to be mechanically locked in both end positions. Consequently, the valve disc is mechanically locked in both open and closed position and cannot be turned by the forces normally created by excessive pressure or flow in the pipelines.
The mechanical locking works independently of the hydraulic oil pressure and thus eliminates the need for a “hydralock” – a double pilot-operated non-return valve in the actuator branch lines. Any extraordinary temperature compensating arrangement intended to keep the actuator in its end position is also unnecessary. A hydralock or any temperature compensating components depend a.o. on the cleanness of the hydraulic oil. Such extra components are avoided because of the actuator’s mechanical locking function, and the “scotch yoke” actuator ensures a reliable performance even with heavily contaminated hydraulic oil.
Easy maintenance
The Mechanical Locking gives the feature of Easy Maintenance as well. The only regular maintenance we recommend on Skarpenord actuators, is changing of the piston sealing. Because of the Mechanical Locking, the sealing can be replaced without any dismantling. The actuator can remain attached to the valve and the valve does not have to be disconnected from the pipeline. The maintenance can be performed with the valve safe locked in fully closed or open position. Full flow can be maintained in the pipeline during maintenance.
EAL™ Hydraulic Oil
Our VRC systems is also suited for use with EAL™ Hydraulic Oil and can be used upon customers preference. This is premium quality, high performance hydraulic oils developed to meet the demand for environmentally acceptable hydraulic fluids
Single acting actuator
Double acting actuator
Emergency block
Hand pump
Indication
Indication box
Indication flag
Indication visual
Actuator - double acting
RA2 – mechanical lock at 100 bar at 130 bar at 180 bar
| RB2 – adjustable stroke | Break | Run | Break | Run | Break | Run |
|---|---|---|---|---|---|---|
| Rx2 05 H1 0 A | 69 | 42 | 90 | 54 | 125 | 75 |
| Rx2 07 H1 0 A | 139 | 83 | 181 | 108 | 50 | 150 |
| Rx2 10 H1 0 A | 278 | 167 | 361 | 217 | 500 | 300 |
| Rx2 12 H1 0 A | 556 | 333 | 722 | 433 | 1000 | 600 |
| Rx2 14 H1 0 A | 1111 | 667 | 1444 | 867 | 2000 | 1200 |
| Rx2 16 H1 0 A | 2222 | 1333 | 2886 | 1733 | 4000 | 2400 |
| Rx2 16 H3 0 B | 3100 | 1860 | 4035 | 2420 | — | — |
| Rx2 25 H1 0 A | 4444 | 2667 | 5778 | 3467 | 8000 | 4800 |
| Rx2 25 H3 0 B | 6249 | 3749 | 8120 | 4870 | — | — |
| Rx2 30 H1 0 A | 8889 | 5333 | 11556 | 6933 | 16000 | 9600 |
| Rx2 30 H3 0 B | 12099 | 7259 | 15727 | 9434 | — | — |
| Rx2 35 H1 0 A | 17778 | 10667 | 23111 | 13867 | 32000 | 19200 |
| Rx2 35 H3 0 B | 24606 | 14764 | 31988 | 19193 | — | — |
| Rx2 40 H1 0 A | 35556 | 21333 | 46222 | 27733 | 64000 | 38400 |
| Rx2 40 H3 0 B | 49660 | 29796 | 64550 | 38735 | — | — |
| Rx2 48 H1 0 B | 54000 | 34000 | 70000 | 44000 | 97000 | 60000 |
| Rx2 60 H1 0 B | 103000 | 65000 | 134000 | 85000 | 185000 | 115000 |
| Actuator type no. | pdf file | stp file | pdf file (w/ ind.box) | stp file (w/ind.box) |
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| Rx2 05 H1 0 A |
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| Rx2 07 H1 0 A |
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| Rx2 10 H1 0 A |
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| Rx2 12 H1 0 A |
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| Rx2 14 H1 0 A |
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| Rx2 16 H1 0 A |
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| Rx2 16 H3 0 B | see above | see above | see above | see above |
| Rx2 25 H1 0 A |
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| Rx2 25 H3 0 B | see above | see above | see above | see above |
| Rx2 30 H1 0 A |
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| Rx2 30 H3 0 B | see above | see above | see above | see above |
| pdf file | stp file | pdf file | stp file | |
| Rx2 35 H1 0 A |
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| Rx2 35 H3 0 B | see above | see above | see above | see above |
| Rx2 40 H1 0 A |
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| Rx2 40 H3 0 B |
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| Rx2 48 H1 0 B | on request | on request | on request | on request |
| Rx2 60 H1 0 B | on request | on request | on request | on request |
Contact Skarpenord for exact dimensions and product drawings, sales@skarpenord.no
Actuator - single acting
* Dimensions for size RE2/RF2 35 and RE2/RF2 40 upon request
y=7: for 130 BAR
y=5: for 180 BAR
RA2 – mechanical locking at 100 bar at 130 bar at 180 bar
RE2 – Spring to close RX2..H5 5 B RX2..H7 1B RX2..H5 1B
| RF2 – SPRING-TO-OPEN | Break | Spring end | Break | Spring end | Break | Spring end |
|---|---|---|---|---|---|---|
| RX2 05 H.. B | 69 | 69 | 153 | 105 | 143 | 105 |
| RX2 07 H.. B | 163 | 131 | 287 | 224 | 305 | 224 |
| RX2 10 H.. B | 315 | 275 | 712 | 391 | 669 | 391 |
| RX2 12 H.. B | 572 | 538 | 1173 | 903 | 1094 | 903 |
| RX2 14 H.. B | 1154 | 1052 | 2253 | 1810 | 2160 | 1810 |
| RX2 16 H5 5 B | 2833 | 1848 | — | — | — | — |
| RX2 16 H.. B | 3794 | 3600 | 4184 | 3600 | 4913 | 3600 |
| RX2 25 H.. B | 6856 | 7329 | 8269 | 7329 | 8997 | 7329 |
| RX2 30 H.. B | 15582 | 14514 | 17809 | 14514 | 16572 | 14514 |
| RX2 35 H.. B | — | — | 37500 | 28500 | 38000 | 28500 |
| RX2 40 H.. B | — | — | 71000 | 56800 | 74500 | 56800 |
y = 7: for 130 bar
y = 5: for 180 bar
| TYPE OF ACTUATOR | pdf file | stp file | pdf file (w/ ind.box) | stp file (w/ ind.box) |
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| RX2 05 HY 1 B |
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| RX2 07 HY 1 B |
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| RX2 10 HY 1 B |
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| RX2 12 HY 1 B |
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| RX2 14 HY 1 B |
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| RX2 16 HY 1 B |
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| RX2 25 HY 1 B |
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| RX2 30 HY 1 B |
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| RX2 35 HY 1 B |
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| RX2 40 HY 1 B |
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Contact Skarpenord for exact dimensions and product drawings, sales@skarpenord.no
